Question

As seen in the PBS Nature documentary ‘What Plants Talk About’, wild tobacco plants have several different mechanisms to defend themselves from herbivore attacks. The following are some of the mechanisms except:

Group of answer choices

production of trichomes or “evil lollipops” that attracts herbivores, make the herbivores “smell” after eating trichomes and they become a target for predation

plants switch pollinators by blooming at dawn

production of nicotine which poisons any organism with muscles

tobacco plant identifies the herbivore by components in their saliva and the leaves release volatiles that will be picked up by specific insect mercenaries

roots deploy chemicals that kill the herbivores

Answer 1

ANSWER :- wild tobacco plant have several different mechanisms to defend themselves from herbivores attack. Out of the following given mechanism they excepted one is:- the production of nicotine which poison any organism with muscle. This mechanism is useful in protecting from insects.

The nicotine alkaloid is produced as a defensive chemical to repel insects that might defoliated or otherwise inflict fatal damage to the plant. Tobacco cultivars defend themselves by producing nicotine to discourage aphids, beetles, caterpillars, leaf miners, spider mites and a host of other rapacious insects.

Tobacco plants indirectly defend themselves from herbivores feeding by emiting a blend of volatiles and non-volatile compounds. Herbivores-induced plants(HIPVs)play an important role in plant defence by either attracting the natural enemies of the herbivores or by acting as feeding and/or oviposition deterrent.

To protect against herbivores, the wild tobacco plant deposits trichomes, sweet treats irresistible to but also potentially fatal for leaf-eatting caterpillars. Shortly after ingesting the trichomes, the insect release a particular odor that attracts ground-foraging predators.

Tobacco plants thwarts caterpillars onslaught by opening flowers in the morning. The plant -poolinator interactive is seen in tobacco plant, in which plant face dilemma related to the which that attracts a pollinator can also attract harbivores, result in an inevitable trade-off. Thus, one wonders whether herbivores-induced changes to flower phenology could be used more generally to mitigate the unwanted side effects associated with flowers that attractive to both pollinators and herbivores. . The role of such a common defence in plants that raises the interesting possibility that the effects of herbivores attacks.